Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1YqqBT-00011w-HB for pgsql-hackers@arkaria.postgresql.org; Fri, 08 May 2015 21:51:51 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.80) (envelope-from ) id 1YqqBT-0005Qj-1E for pgsql-hackers@arkaria.postgresql.org; Fri, 08 May 2015 21:51:51 +0000 Received: from makus.postgresql.org ([2001:4800:1501:1::229]) by malur.postgresql.org with esmtps (TLS1.2:RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1YqqBS-0005Qd-4n for pgsql-hackers@postgresql.org; Fri, 08 May 2015 21:51:50 +0000 Received: from sss.pgh.pa.us ([66.207.139.130]) by makus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.84) (envelope-from ) id 1YqqBP-0007A7-EV for pgsql-hackers@postgresql.org; Fri, 08 May 2015 21:51:48 +0000 Received: from sss1.sss.pgh.pa.us (localhost [127.0.0.1]) by sss.pgh.pa.us (8.14.4/8.14.4) with ESMTP id t48LpRcL023550; Fri, 8 May 2015 17:51:27 -0400 From: Tom Lane To: Andres Freund cc: Stephen Frost , Peter Geoghegan , Heikki Linnakangas , Jeff Janes , Dean Rasheed , Bruce Momjian , Pg Hackers Subject: Re: INSERT ... ON CONFLICT UPDATE/IGNORE 4.0 In-reply-to: <20150508211339.GY12950@alap3.anarazel.de> References: <20150508181445.GS12950@alap3.anarazel.de> <17473.1431109846@sss.pgh.pa.us> <20150508183504.GU12950@alap3.anarazel.de> <18313.1431111562@sss.pgh.pa.us> <18691.1431112058@sss.pgh.pa.us> <18911.1431112384@sss.pgh.pa.us> <20150508191600.GA30322@tamriel.snowman.net> <19213.1431112929@sss.pgh.pa.us> <20150508202947.GX12950@alap3.anarazel.de> <20150508211339.GY12950@alap3.anarazel.de> Comments: In-reply-to Andres Freund message dated "Fri, 08 May 2015 23:13:39 +0200" Date: Fri, 08 May 2015 17:51:27 -0400 Message-ID: <23549.1431121887@sss.pgh.pa.us> X-Pg-Spam-Score: -0.4 (/) List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-hackers Precedence: bulk Sender: pgsql-hackers-owner@postgresql.org Andres Freund writes: > prairiedog, without CCA, failed as well > http://pgbuildfarm.org/cgi-bin/show_log.pl?nm=prairiedog&dt=2015-05-08%2019%3A55%3A11 > different test, but again directly after index creation. So I hope it's > indeed the indcheckxmin thing. Oh, interesting. That definitely suggests it's about machine speed/timing not CCA per se (prairiedog being quite slow). Which would fit with the indcheckxmin theory. regards, tom lane -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers